Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

What are the possible phenotypes of the progeny, A (w+/ w+) red-eyed Drosop...

A (w+/ w+) red-eyed Drosophila female is crossed with a white-eyed male. Assuming the trait for eye colour is sex-linked, what are the possible phenotypes of the progeny?

Waxes, WAXES These are monoglyceride compounds. They are chemical...

WAXES These are monoglyceride compounds. They are chemically inert (due to absence of double bonds) and insoluble in water. On heating they become soft and pliable

What is metabolomics, Together, genomics, proteomics and transcriptomics ar...

Together, genomics, proteomics and transcriptomics are influential approaches to enhancing our understanding not only of how cells function normally but also what the key modificat

Explain the work of john ray in animal taxonomy, Explain the Work of John R...

Explain the Work of John Ray in Animal Taxonomy? The first important work on both animal and plants was initiated by John Ray (1627-1705). He followed Aristotle and divided ani

Explain oncogenes or defective tumour suppressor genes, 1.  Explain why a g...

1.  Explain why a gain of function would be a dominant effect and a loss of function would be a recessive effect. Which types of genes are each associated with: oncogenes or defect

Briefly explain how amniocentesis used in genetic screening, Briefly explai...

Briefly explain how amniocentesis and chorionic villi sampling are used in genetic screening. A small sample is removed from the amniotic fluid surrounding the fetus or from t

What would be the flow rate, The physician orders 2 liters of lactated ring...

The physician orders 2 liters of lactated ringers over 16 hours. The drip factor of the tubing is 20 gtt/cc. What will be the flow rate? a. 33.33 or 34 gtt/min b. 41.66 or 42

Summary of economic dimensions of financing healthcare, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain about the colorimeter, Explain about the Colorimeter? Colorimet...

Explain about the Colorimeter? Colorimeter is an instrument for measuring the colour or colour intensity of a solution. It is an instrument that measures the concentration of a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd